#!/bin/bash

# Check if user is root
if [ $(id -u) != "0" ]; then
    echo "Error: You must be root to run this script, use sudo sh $0"
    exit 1
fi

clear
echo "========================================================================="
echo "Install VSFTPD for LinuxLMP V0.1,  Written by 73yi.net "
echo "========================================================================="
echo "LinuxLMP is a tool to auto-compile & install Litespeed+MySQL+PHP on Linux "
echo "This script is a tool to Install VSFTPD "
echo "For more information please visit http://bbs.73yi.net/forum-46-1.html"
echo ""
echo "========================================================================="

#FTP
if [ -f /etc/init.d/vsftpd ];then
read -p "Do you want to create a new FTP user? (y/n)" ftp_enable
if [ "$ftp_enable" = 'y' ] || [ "$ftp_enable" = 'Y' ]; then
		read -p "Please input a NEW ftp username:" ftp_username
		user_exist=$(grep "^${ftp_username}:" /etc/passwd | awk -F":" '{ print $1 }')
		if [ "$user_exist" != "$ftp_username" ]; then
				read -p "Please input ftp passwrod:" ftp_password
				read -p "Please input the home directory of the ftp user(e.g. /home/wwwroot/example.com/html ):" directory
				mkdir -p $directory
				useradd -d $directory -s /sbin/nologin $ftp_username -o -u 99 -g 99
				echo $ftp_username:$ftp_password | chpasswd
				chown_ftp="1"
				else
				echo "================================="
				echo "FTP USER $ftp_username is exist!"
				echo "================================="
				exit 0
			fi
	fi
	
else
	
#vsftpd start up
echo "========================================================================="
echo "Would you like to have VSFTPD started automatically when the server restarts?"
read -p "(y/n)" ftp_startup
echo "========================================================================="


#INSTALL VSFTPD
yum install -y vsftpd
mv -f /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.bak
cat >>/etc/vsftpd/vsftpd.conf<<EOF
# Example config file /etc/vsftpd/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# The target log file can be vsftpd_log_file or xferlog_file.
# This depends on setting xferlog_std_format parameter
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# The name of log file when xferlog_enable=YES and xferlog_std_format=YES
# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
#xferlog_file=/var/log/xferlog
#
# Switches between logging into vsftpd_log_file and xferlog_file files.
# NO writes to vsftpd_log_file, YES to xferlog_file
xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd/banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
chroot_list_enable=YES
# (default follows)
#chroot_list_file=/etc/vsftpd/chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
# When "listen" directive is enabled, vsftpd runs in standalone mode and 
# listens on IPv4 sockets. This directive cannot be used in conjunction 
# with the listen_ipv6 directive.
listen=YES
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, you must run two copies of vsftpd whith two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES

pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES
EOF

echo "$ftp_username" >> /etc/vsftpd/chroot_list
	
#vsftpd start up set
if [ "$ftp_startup" = 'y' ] || [ "$ftp_startup" = 'Y' ]; then
		chkconfig --level 345 vsftpd on
	fi
	
fi
#chown ftp
if [ "$chown_ftp" = '1' ]; then
		chown -R nobody $directory
	fi

#vsftpd restart
/etc/init.d/vsftpd restart

echo "========================================================================="
echo "VSFTPD has been installed now!"
echo "Please run sh /root/linuxlmp/vsftpd.sh for creating ftp user."
echo "For more information,please visit http://bbs.73yi.net/forum-46-1.html."
echo "========================================================================="







